{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["RNA", "protein", "DNA", "cell type", "cell line"], "input": "Gel retardation assays , using a 32P-probe containing the HIV-1 NF-kB probe and nuclear extracts from PMA -treated cells , showed significantly reduced induction of nuclear NF-kB binding proteins in these two subclones compared with wild type CEM and a control subclone."}
{"RNA": [], "protein": ["NF-kB", "nuclear NF-kB binding proteins", "wild type CEM", "CEM"], "DNA": [], "cell type": ["PMA -treated cells"], "cell line": []}